Cold Process or Hot Process? Is One Better Than The Other?

For many newcomers to soap-making, that is the question they face. Is one better than the other, or is one considered better quality? In the case of Cold Process vs Hot Process, we have the verdict. Which one do you think it is?

The answer in our opinion is both for many reasons. Sure, some people are going to have their preferences but in the end, the quality of the soap is not necessarily better with any single method. We will go into detail of the Pro and Cons of each method of soap-making. We find that a majority of the cons have to do with aesthetic wants.

Cold Process vs Hot Process: Pros and Cons of Each

The Pros:

Cold Process Pros

  • Can add fresh ingredients to the mix, like, milk or fruit/vegetable purees.
  • The tracing(thickness of the mixture) allows for a creative technique to be used. Such as making the tops look like frosting or adding swirls.

Hot Process Pros

  • The additional heat used to make the soap makes it so the curing process only takes a day. So you can use it almost right away.
  • With that, it can be made in either a crockpot or double boiler.
  • Clean up is easier as the material in the crock pot/double boiler is already soap to use!

Pros for Both

  • Allows you to customize exactly what you put into the soap, including oils.
  • The thick textures allow for an easy suspension of heavier additives.
  • Considered a more natural soap with either method

The Cons

Cold Process Cons

  • The soap needs 4-6 weeks to cure before use. You can use it but it will not last in water.
  • Clean up can be a long process, especially if you used many different colors.
  • Some colorants tend to become distorted due to the high PH environment they are in.

Hot Process Cons

  • The thick texture of the soap makes doing creative techniques such as swirls very difficult.
  • If your fragrance oil has a low flashpoint, there is a good chance it will burn off in the saponification process.
  • It has a more rustic appearance compared to cold process soaps. Some people like this, others don't.

Cons for Both

  • They are both made with Lye, so careful use is important to not cause harm to yourself or others.


As you can see, there are very little differences that make an actual leader of the other. If you prefer a smoother looking soap go with the cold process. If you want to be able to use your soap right away, choose hot process. In the end, with cold process vs hot process, it comes down to your own personal preference. We here at The Bohemia Boutique prefer hot process soap for its rustic look as it fits into our brand more.

What do you prefer is either making or purchasing soap and why?

Let us know what you think in the comments below!

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